Started working on Teacher login

Also started making javascript for front end more modular
Working on finishing Student Page
Merge remote-tracking branch 'origin/AdamBranch'
Merge remote-tracking branch 'origin/Jay'
Fixed finalize button
Deleted obs_main.js
Fixed error with saving exhibit behaviors
Merge remote-tracking branch 'origin/master' into Jay
Examined almost all pages in the Admin section and set styles where needed.

Also made it to where you cannot edit the username.